Trig Practice: SOH CAH TOA

Front

What does SOH CAH TOA stand for?

Back

SOH: Sine = Opposite/Hypotenuse, CAH: Cosine = Adjacent/Hypotenuse, TOA: Tangent = Opposite/Adjacent.

Front

What is the sine function used for in trigonometry?

Back

The sine function is used to find the ratio of the length of the opposite side to the hypotenuse in a right triangle.

Front

If the opposite side is 20 and the hypotenuse is 29, what is Sin C?

Back

Sin C = Opposite/Hypotenuse = 20/29.

Front

What is the cosine function used for in trigonometry?

Back

The cosine function is used to find the ratio of the length of the adjacent side to the hypotenuse in a right triangle.

Front

If the adjacent side is 21 and the hypotenuse is 29, what is Cos C?

Back

Cos C = Adjacent/Hypotenuse = 21/29.

Front

What is the tangent function used for in trigonometry?

Back

The tangent function is used to find the ratio of the length of the opposite side to the adjacent side in a right triangle.

Front

If the opposite side is 21 and the adjacent side is 20, what is Tan C?

Back

Tan C = Opposite/Adjacent = 21/20.

Front

How do you find the length of a side in a right triangle using trigonometric ratios?

Back

Use the appropriate trigonometric function (sine, cosine, or tangent) based on the known sides and the angle.

Front

What is the relationship between the sides of a right triangle and the angles?

Back

The lengths of the sides are proportional to the sine, cosine, and tangent of the angles.

Front

If you know the hypotenuse and the opposite side, which function do you use to find the angle?

Back

Use the inverse sine function (sin⁻¹) to find the angle.